Search Results - "RIZAK, V. M"

Raman Light Scattering by Glassy Lithium Tetraborate Activated with Tb2O3 by Puga, P. P., Gomonai, A. I., Puga, G. D., Gomonai, A. N., Danilyuk, P. S., Rizak, V. M., Kvetkova, L., Birov, N. N.

“…Raman spectra of glassy lithium tetraborate activated with different concentration of terbium oxide are investigated. Most of the observed structure in the…”
Get full text

Investigation of thermal properties of the Ge–As–Se glasses by differential scanning calorimetry with heat flow harmonic modulation by Bilanych, V.S., Onyshchak, V.B., Rizak, I.M., Csach, K., Flachbart, K., Rizak, V.M.

“…Thermal properties of the GexAsySe100−x−y glasses have been studied using differential scanning calorimetry with harmonic temperature modulation. The…”
Get full text

Parameters of the Fluctuation Free Volume Theory for Glasses in the Ge–As–Se System by Mel'nichenko, T. D., Rizak, V. M., Mel'nichenko, T. N., Fedelesh, V. I.

“…The fraction of fluctuation free volume (f^sub g^ = V^sub f^/V) frozen at the glass transition temperature T^sub g^ is determined from the temperature…”
Get full text

Infralow-Frequency Mechanical Properties of Sn2P2S6 Single Crystal by RIZAK, V. M., RIZAK, I. M., BILANYCH, V. S., PRITS, I. P.

“…Temperature-frequency dependences of internal friction Q −1 and shear modulus G of Sn 2 P 2 S 6 single crystals are studied within the temperature interval…”
Get full text

Determination of the Fluctuation Free Volume Fraction for Glasses in the As-S(Se) Systems by Mel'nichenko, T D, Rizak, V M, Mel'nichenko, T N

“…The fraction f^sub g^ of fluctuation free volume frozen at the glass transition temperature is determined from the temperature dependence of the viscosity in…”
Get full text

Electric Properties of Lithium Tetraborate in Vitreous and Crystalline States by Rizak, V. M., Rizak, I. M., Bausa, N. D., Bilanych, V. S., Stefanovych, S. Yu, Bohuslavskii, M. B., Holovey, V. M.

“…The results of the studies of temperature-frequency dependences of electric properties of Li 2 B 4 O 7 compound in the crystalline and vitreous states within…”
Get full text

Effect of gamma irradiation on internal friction in lithium tetraborate by Bilanych, V. S., Baisa, N. D., Rizak, V. M., Rizak, I. M.

“…The effect of gamma irradiation on the mechanical properties of lithium tetraborate Li2B4O7 in the single-crystal and vitreous states is investigated. It is…”
Get full text

Similarities and differences in the construction of dispersion laws for charge carriers in semiconductor crystals and adiabatic potentials in molecules by Bercha, S. A, Rizak, V. M

“…Condens. Matter Phys., 2014, vol. 17, No. 2, 23701 Using the group theory and the method of invariants, it is shown how the vibronic potential can be written…”
Get full text

Application of the excited state model to chalcogenide glasses by Mel’nichenko, T. D., Rizak, V. M., Fedelesh, V. I., Mel’nichenko, T. N., Sanditov, D. S., Badmaev, S. S.

“…The limiting displacement of an atom (a group of atoms), which corresponds to the maximum of the interatomic interaction force, is treated as a process of…”
Get full text

Phonon density of states reconstruction of the temperature dependence of heat capacity ferroelectrics Sn2P2Se(S)6 crystals by RIZAK, V. M, RIZAK, I. M, LENDYEL, O. I, MASLYUK, V. V

Get full text

Charge transport in Li2B4O7 in single crystal and glassy states by Rizak, I. M., Rizak, V. M., Baisa, N. D., Bilanich, V. S., Boguslavskii, M. V., Stefanovich, S. Yu, Golovei, V. M.

Get full text

Internal friction of Li2B4O7 single crystals by Bilanych, V. S., Baisa, N. D., Rizak, V. M., Rizak, I. M., Holovey, V. M.

Get full text

Thermal conductivity of bismuth tellurite by Domoratsky, K. V., Rizak, V. M., Sadovskaya, L. Ya

Get full text

X-ray Fluorescence of Eu3+ Ions in Glassy and Polycrystalline Lithium Tetraborate by Danilyuk, P. S., Puga, P. P., Krasilinets, V. N., Gomonai, A. I., Puga, G. D., Rizak, V. M., Turok, I. I.

“…The X-ray-luminescence spectra of glassy and polycrystalline lithium tetraborate Li 2 B4O 7 activated by europium oxide Eu 2 O 3 are studied in the spectral…”
Get full text

X-ray luminescence and spectroscopic characteristics of Er3+ ions in a glassy lithium tetraborate matrix by Danilyuk, P. S., Puga, P. P., Gomonai, A. I., Krasilinets, V. N., Volovich, P. N., Rizak, V. M.

“…X-ray luminescence spectra of Li 2 B 4 O 7 :Er glasses have been investigated in the range of 200–800 nm. It is shown that all identified peaks in the…”
Get full text

Raman scattering in the Bi2TeO5 single crystal by Domoratskii, K. V., Pastukhov, V. I., Kudzin, A. Yu, Sadovskaya, L. Ya, Rizak, V. M., Stefanovich, V. A.

Get full text

Optical absorption spectra and energy levels of Er3+ ions in glassy lithium tetraborate matrix by Danilyuk, P. S., Popovich, K. P., Puga, P. P., Gomonai, A. I., Primak, N. V., Krasilinets, V. N., Turok, I. I., Puga, G. D., Rizak, V. M.

“…The optical absorption spectra of Er:Li 2 B 4 O 7 glasses are studied in the range 200–800 nm. The lines corresponding to the direct f-f parity-forbidden…”
Get full text

Similarities and differences in the construction of dispersion laws for charge carriers in semiconductor crystals and adiabatic potentials in molecules by S.A. Bercha, V.M. Rizak

“…Using the group theory and the method of invariants, it is shown how the vibronic potential can be written in a matrix form and the corresponding adiabatic…”
Get full text

Study of the dynamics and mechanisms of deformation of thin chalcogenide As(Ge)2Se3 films by nanoindentation by Bilanych, V. S., Kikemezey, S. S., Rizak, I. M., Rizak, V. M.

“…The mechanical properties of As 2 Se 3 and Ge 2 Se 3 thin films have been studied by the method of quasi-static nonoindentation. The mechanisms of formation…”
Get full text

Nanoindentation of amorphous Ge-As-Se films by Bilanych, V. S., Lofaj, F., Flachbart, K., Csach, K., Kuz’ma, V. V., Rizak, V. M.

“…Changes in the nanohardness H and Young’s modulus E of Ge x As y Se 100 − x − y films have been studied as a function of the penetration depth of the Berkovich…”
Get full text